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Dowell Materials >
Chang Chun PBT > What is PBT?
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- POLYBUTYLENE
TEREPHTHALATE (PBT)
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Introduction
PBT - Polybutylene Terephthalate is the
synthetic thermosplastic compound of 1-4-Butylene glycol with DMT or PTA.
It was widely used in electronic, electrical, communications, fiber optics
and automotive industires.
There are two kind of PBT product - PBT Resin and
PBT compound.
PBT Resin is the base resin while PBT
compound are combination of PBT resin, fiber glass filling and other
additives such as UV protection agent, and flame retardant.
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Characteristic
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fast crystallization,
easy to mold.
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melting temperature
reaches to 225oC, high deflection temperation.
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fiber glass re-enforced,
good mechanical strength
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low water absorption
rate, low shrinkage rate
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resistant to chemical,
solvent and natural weather
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low warpage
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can reach UL94V-0
flammability
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ultrasound welding
capability
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Good electrical
resistance
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Fire
retardant being used in CCP PBT does not contain PBDE & PBB Brominated
ingredient.
Example: Chang
Chun PBT molding compound.
| General Specifications
of PBT molding compound |
| Properties |
Unit |
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| Flexural strength |
MPa |
74.1 ~ 227.24 |
| Tensile Elongation |
% |
4 ~ 9 |
| Tensile Strength |
MPa |
49.4 ~ 138.3 |
| Impact, Izod |
kg-cm/cm |
2.5 ~ 13 |
| Deflection Temp. |
oC |
165 ~ 220 |
| UL Flammability |
mm |
UL94V-0 |
| Water absorption |
% |
0.03 ~ 0.05 |
| Molded Shrinkage |
% |
0.2 ~ 2.0 |
| Specific Gravity |
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1.32 ~1.66 |
| Glass Fiber Content |
% |
0 ~ 40 |
| For reference
only
PBT reference chart
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Purpose of PBT Resin
- PBT Fiber
- Optical Cable Coatings
- PBT film
- PBT Master Batch
- Glass-Fiber Reinforced & Flame
Retardant Grade PBT Compound
- Electronic Parts, Electrical Parts, and
Auto Parts
Purpose of PBT Molding
Compound
- Automotive accessories,
motor cover, motor brush
- Connectors, cooler fan,
plugs, bobbins, switches
- TV set accessories,
commutators
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Helpful Links
In order to let
you have clear picture of CCP's PBT capability, you can go to the PBT
Reference Chart with other
manufacturers in the world for
reference.
Molding
Conditions for PBT provides you and your engineers the starting
point for machine adjustment.
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